# MTX_OrthoW

## C Specification

      #include <nitro/fx/fx_mtx44.h>

      void MTX_OrthoW(
          fx32        t,
          fx32        b,
          fx32        l,
          fx32        r,
          fx32        n,
          fx32        f,
          fx32        scaleW,
          MtxFx44*    mtx );

## Description

This sets a orthogonal projection matrix to matrix `*mtx`. It uses the Divider.

Note: When setting the matrix for an orthogonal projection, it will be necessary to select Z-buffering with the `G3*_SwapBuffers`. The operation is not guaranteed if W-buffering is used, since the depth value is constant.

xscaleW

## Arguments

`t` | Y coordinate at the top of the near clipping plane
`b` | Y coordinate at the bottom of the near clipping plane
`l` | X coordinate at the left of the near clipping plane
`r` | X coordinate at the right of the near clipping plane
`n` | The distance from the eyepoint to the near clipping plane
`f` | The distance from the eyepoint to the far clipping plane
`scaleW` | Fine adjustment parameter for the view volume
`mtx` | Pointer to a 4x4 matrix

## Return Values

None.

## See Also

`G3_OrthoW, MTX_Ortho, G3_Ortho`

## Revision History

06/21/2004 Initial Version